TDA and RPA pseudoscalar and vector solutions for the low energy regime of a motivated QCD Hamiltonian

We present the low energy meson spectrum of a Coulomb gauge QCD motivated Hamiltonian for light and strange quarks. We have used the harmonic oscillator as a trial basis and performed a pre-diagonalization of the kinetic energy term in order to get an effective basis where quark and anti-quark degre...

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Autores principales: Yépez Martínez, Tochtli, Amor Quiroz, D. A., Hess, P. O., Civitarese, Enrique Osvaldo
Formato: Articulo
Lenguaje:Inglés
Publicado: 2017
Materias:
Ciencias Exactas
Física
quarks
QCD Hamiltonian
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/87447
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-87447
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Ciencias Exactas
Física
quarks
QCD Hamiltonian
spellingShingle Ciencias Exactas
Física
quarks
QCD Hamiltonian
Yépez Martínez, Tochtli
Amor Quiroz, D. A.
Hess, P. O.
Civitarese, Enrique Osvaldo
TDA and RPA pseudoscalar and vector solutions for the low energy regime of a motivated QCD Hamiltonian
topic_facet Ciencias Exactas
Física
quarks
QCD Hamiltonian
description We present the low energy meson spectrum of a Coulomb gauge QCD motivated Hamiltonian for light and strange quarks. We have used the harmonic oscillator as a trial basis and performed a pre-diagonalization of the kinetic energy term in order to get an effective basis where quark and anti-quark degrees of freedom are defined. For the relevant interactions between quarks and anti-quarks, we have implemented a confining interaction between color sources, in order to account in an effective way for the gluonic degrees of freedom. The low energy meson spectrum is obtained from the implementation of the TDA and RPA many-body-methods. The physical states have been described as TDA and RPA collective states with a relatively good agreement. Particularly, the particle-hole correlations of the RPA ground state improve the RPA pion-like state (159.7 MeV) close to its physical value while the TDA one remains at a higher energy (269.2 MeV).
format Articulo
Articulo
author Yépez Martínez, Tochtli
Amor Quiroz, D. A.
Hess, P. O.
Civitarese, Enrique Osvaldo
author_facet Yépez Martínez, Tochtli
Amor Quiroz, D. A.
Hess, P. O.
Civitarese, Enrique Osvaldo
author_sort Yépez Martínez, Tochtli
title TDA and RPA pseudoscalar and vector solutions for the low energy regime of a motivated QCD Hamiltonian
title_short TDA and RPA pseudoscalar and vector solutions for the low energy regime of a motivated QCD Hamiltonian
title_full TDA and RPA pseudoscalar and vector solutions for the low energy regime of a motivated QCD Hamiltonian
title_fullStr TDA and RPA pseudoscalar and vector solutions for the low energy regime of a motivated QCD Hamiltonian
title_full_unstemmed TDA and RPA pseudoscalar and vector solutions for the low energy regime of a motivated QCD Hamiltonian
title_sort tda and rpa pseudoscalar and vector solutions for the low energy regime of a motivated qcd hamiltonian
publishDate 2017
url http://sedici.unlp.edu.ar/handle/10915/87447
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AT amorquirozda tdaandrpapseudoscalarandvectorsolutionsforthelowenergyregimeofamotivatedqcdhamiltonian
AT hesspo tdaandrpapseudoscalarandvectorsolutionsforthelowenergyregimeofamotivatedqcdhamiltonian
AT civitareseenriqueosvaldo tdaandrpapseudoscalarandvectorsolutionsforthelowenergyregimeofamotivatedqcdhamiltonian
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